JPH08304251A - Device and method for performing expansion and contraction fatigue test on sheet-like sample - Google Patents

Abstract

PURPOSE: To accurately perform expansion and contraction fatigue tests on a sheet-like sample conformably to the using state of the sample. CONSTITUTION: A device for performing expansion and contraction fatigue test on sheet-like sample is provided with a plurality of fixing members 2 and 5 which fix the peripheral section of a sheet-like sample S composed of a piece of cloth, etc., forward-backward driving means 6 and 7 which drive the members 2-5 forward and backward along a plurality of radially arranged shafts from one point on sample stage 1, moving extent setting means 8 and 9 which respectively set the fixing member moving extents of the driving means 6 and 7, and moving speed setting means 10 and 11 which respectively set the fixing member moving speeds of the driving means 6 and 7 and a expansion and a contraction fatigue testing method using the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion / contraction fatigue test apparatus for a sheet-like sample made of cloth and the like and a method for expanding / contracting the same.

[0002]

2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Patent Publication No. 56-5333, hydraulic cylinders are axially applied to test pieces (sheet-like samples) repeatedly in axial directions perpendicular to each other. Two actuators consisting of the above are provided oppositely to each other, an oscillator for outputting the operation signals of these actuators and a detection means for detecting the generated load are provided, and the operation of each actuator is feedback-controlled based on these signals. In addition, there is known a multi-axis fatigue testing device equipped with a load adjusting mechanism that detects a load difference between actuators facing each other on the same axis and eliminates the load difference.

[0003]

According to the multi-axial fatigue test apparatus having the above-mentioned structure, the load acting in the axial direction is accurately controlled by feedback control of the load acting from two directions orthogonal to each other on the plane including the sheet sample. Have the advantage that they can be prevented from interfering with each other, and that the load distribution applied to each shaft end can be made variable as needed, but on the other hand, the range of expansion and contraction and the speed of expansion and contraction of the sheet-like sample Therefore, there is a problem in that it is not possible to perform an accurate expansion / contraction fatigue test suitable for the usage state of the sheet-shaped sample.

For example, a sheet-shaped sample made of cloth using elastic yarn used in sportswear or the like has a large range of elastic force acting at high speed, and non-woven fabric and synthetic leather material used for ordinary clothing and the like. Since the expansion and contraction force of a relatively small range acts on the sheet-shaped sample consisting of etc. at a low speed, and the operating conditions change variously depending on the application site and material, etc. If the expansion / contraction speed is controlled to be constant, there is a problem that the expansion / contraction fatigue test suitable for the usage state cannot be performed.

The present invention has been made in order to solve the above-mentioned problems, and a sheet-shaped sample expansion / contraction fatigue testing apparatus and an expansion / contraction fatigue testing apparatus capable of performing an accurate expansion / contraction fatigue test suitable for the usage state of the sheet-shaped sample. It is intended to provide a stretch fatigue test method.

[0006]

The invention according to claim 1 is
A plurality of fastening members to which a peripheral portion of a sheet-like sample made of cloth or the like is fastened, and the above fastening members are reciprocally driven along a plurality of axes radially arranged around a point on the sample table. Reciprocating driving means, moving range setting means for setting the moving range of the fastening member for each reciprocating driving means, and moving speed setting means for setting the moving speed of the fastening member for each reciprocating driving means. It is a thing.

According to a second aspect of the present invention, in the expansion-contraction fatigue test apparatus for a sheet-shaped sample according to the first aspect, an origin position detecting means for detecting that the fastening member is at the origin position,
An extension position detecting means for detecting that the fastening member has moved to the extension position and an extension position adjusting means for adjusting the installation position of the extension position detecting means are provided, and the movement range of the fastening member is the origin position. A moving range setting means for restricting the extension position is provided.

According to a third aspect of the present invention, there is provided an expansion / contraction fatigue test apparatus for a sheet-shaped sample according to the first or second aspect,
The speed input means for inputting the moving speed of the fastening member, and the rotational speed thereof by controlling the drive voltage of the drive motor constituting the reciprocating driving means in accordance with the moving speed of the fastening member inputted by the speed input means. A moving speed control means having a voltage control means for controlling

The invention according to claim 4 is the above claims 1 to 3.
In the expansion-contraction fatigue test apparatus for a sheet-like sample described in any one of 1, the automatic mode control means for outputting to the reciprocating drive means a control signal for driving the fastening member based on a preset operation mode is provided. .

The invention according to claim 5 is the above claims 1 to 3.
In the expansion-contraction fatigue test apparatus for a sheet-like sample described in any one of 1, an operation mode input means for inputting an operation mode of the fastening member, and a control corresponding to the operation mode of the fastening member input by the operation mode input means. And a manual mode control means for outputting a signal to the reciprocating drive means.

According to a sixth aspect of the present invention, in the state where the peripheral portion of the sheet-shaped sample made of cloth or the like is fixed to a plurality of fixing members, a plurality of axes arranged radially around one point on the sample table. Set the moving range and moving speed corresponding to the usage state of the sheet-like sample along with, and after reciprocally driving the fastening members according to the moving range and moving speed, evaluate the fatigue characteristics of the sheet-like sample It is configured to do.

[0012]

According to the invention described in claim 1, the reciprocating driving means operates according to the moving range of the fastening member set by the moving range setting means and the moving speed of the fastening member set by the moving speed setting means. By controlling the operating state,
The sheet-like sample is repeatedly stretched at a predetermined stretching rate and stretching rate.

According to the invention described in claim 2, between the installation portion of the origin position detecting means and the installation portion of the extended position detecting means whose position is adjusted by the extended position adjusting means,
The fastening member is driven to reciprocate.

According to the third aspect of the invention, the expansion / contraction speed of the sheet-like sample is controlled by controlling the drive voltage of the drive motor according to the moving speed of the fastening member input by the speed input means. Will be done.

According to the fourth aspect of the invention, the operating state of the reciprocating drive means is controlled in accordance with the control signal output from the automatic mode control means, so that the operation is stopped in accordance with the preset operation mode. The attachment member is reciprocally driven, and the expansion and contraction fatigue test of the sheet sample is automatically performed.

According to the fifth aspect of the present invention, the fastening member is reciprocally driven by controlling the operating state of the reciprocating driving means in accordance with the operating state input by the operating mode inputting means, so that the sheet-like member is driven. A stretch fatigue test of the sample will be performed.

According to the invention described in claim 6, the fastening member is reciprocally driven within a moving range and a moving speed corresponding to a usage state of the sheet sample, and thus the clothing etc. to which the sheet sample is applied. An expansion / contraction fatigue test suitable for the expansion rate and expansion / contraction speed of the hips or elbows that occur during attachment / detachment of the body and bending / extension operation is performed, and the fatigue characteristics are appropriately evaluated.

[0018]

EXAMPLES FIGS. 1 to 3 show an example of an expansion and contraction fatigue test apparatus for a sheet-like sample according to the present invention. This expansion / contraction fatigue testing apparatus includes a flat plate-shaped sample stand 1, four fastening members 2 to 5 to which each outer peripheral portion of a sheet-shaped sample S made of a cloth or the like formed in a square shape is fastened, and the above-mentioned fastening. The first reciprocating drive means 6 and the second reciprocating drive means 7 for reciprocatingly driving the attachment members 2, 3 and 4, 5 and the reciprocating drive means 6, 7 for the movement range of the fixing members 2, 3, 4 and 5. The first and second movement range setting means 8 and 9 which are set for each reciprocating drive means 6 and 7 and the movement speed of the fastening members 2, 3 and 4, 5 which are set for each reciprocating drive means 6 and 7. It has speed setting means 10 and 11.

The fastening members 2 to 5 have a large number of needles 2 on the upper surface.
a to 5a are made of a block material or the like having a projecting fastening portion, and are configured to be fastened by piercing the peripheral portion of the sample S with this needle. In order to ensure safety, the cover that covers the portion where the needle projects above the sample S in a state where the sheet-shaped sample is fixed to each fixing member 2-5.
It is desirable to have a structure that installs etc.

The first reciprocating drive means 6 has a pair of screw shafts 12 and 13 installed in a straight line passing through a point in the central portion above the sample table 1 and rotatably supporting the screw shafts 12 and 13. Bearing members 14 and 15 and the screw shaft 1
Driven pulleys 16 and 17 fixed to the outer end portions of 2 and 13
And a drive mechanism 18 for driving the driven pulleys 16 and 17
And the screw nut member 1 screwed to the screw shafts 12 and 13 and fixed to the fastening members 2 and 3.
It has 9 and 20.

The second reciprocating driving means 7 includes a pair of screw shafts 21 and 22 arranged above the sample table 1 in a direction orthogonal to the screw shafts 12 and 13, and the screw shafts 21 and 22. Bearing members 23 and 24 for rotatably supporting 22
Driven pulleys 25 and 26 fixed to the outer ends of the screw shafts 21 and 22, a drive mechanism 27 for driving the driven pulleys 25 and 26, and screwed to the screw shafts 21 and 22. At the same time, it has screw nut members 28 and 29 fixed to the fastening members 4 and 5.

The drive mechanism 18 of the first reciprocating drive means 6
Is a pair of drive shafts 30 and 31 arranged below the sample table 1 in parallel with the screw shafts 12 and 13, a bearing member 32 that rotatably supports the drive shafts 30 and 31, and the drive shaft. The drive pulleys 34 and 35 fixed to the outer ends of the shafts 30 and 31, the driven bevel gears 36 and 37 fixed to the inner ends of the drive shafts 30 and 31, and the driven bevel gear 3
6 and 37, a drive bevel gear 38 that transmits a drive force, a drive motor 39 that includes a servo motor that rotationally drives the drive bevel gear 38, and the drive forces of the drive pulleys 34 and 35 that are transmitted to the driven pulleys 16 and 17. It has power transmission belts 40 and 41.

Then, by driving the drive motor 39 in the normal direction in response to a control signal output from a control unit 62 described later, the driving force is transmitted from the drive bevel gear 38 to the driven bevel gears 36, 37. Drive shaft 30,
31 and the drive pulleys 34 and 35 are rotationally driven, and the driven pulleys 16 and 17 and the screw shafts 12 and 13 are normally rotated by the power transmission belts 40 and 41 to move the screw nuts 19 and 20 along the guide portion 33. The sheet-shaped sample S is subjected to a tensile force by screw-feeding to the outside and expanding the installation interval of the fastening members 2 and 3 facing each other.
Further, the drive motor 39 is reversely rotated to drive the screw shaft 1
By rotating 2 and 13 in the reverse direction, the installation interval of the fastening members 2 and 3 is reduced and the tensile force acting on the sheet sample S is released.

The drive mechanism 25 of the second reciprocating drive means 7
At the position offset above the drive shafts 30 and 31 of the first reciprocating drive means 6, the screw shafts 21 and 22.
A pair of drive shafts 42, 43 arranged in parallel with the bearing shaft 44, and a bearing member 44 for rotatably supporting the drive shafts 42, 43,
The drive pulleys 46 and 47 fixed to the outer ends of the drive shafts 42 and 43, the driven bevel gears 48 and 49 fixed to the inner ends of the drive shafts 42 and 43, and the driving force to the driven bevel gears 48 and 49. Drive bevel gear 50 for transmitting
The drive bevel gear 50 includes a drive motor 51, which is a servomotor for rotating the drive bevel gear 50, and power transmission belts 51a and 51b that transmit the drive force of the drive pulleys 46 and 47 to the driven pulleys 25 and 26.

Then, by driving the drive motor 51 to rotate in the forward direction, its driving force is increased.
From the driven bevel gears 48, 49 to the drive shaft 4
2, 43 and the drive pulleys 46, 47 are rotationally driven, and the driven pulleys 25, 26 and the screw shafts 23, 24 are normally rotated by the power transmission belts 51a, 51b so that the screw nuts 28, 29 are guided to the guide portion 45. The sheet-shaped sample S is subjected to a tensile force by screwing it outward to widen the installation intervals of the fastening members 4 and 5. In addition, the screw motor 2 is driven by rotating the drive motor in the reverse direction.
By rotating 3 and 24 in the reverse direction, the installation interval of the fastening members 4 and 5 is reduced, and the tensile force acting on the sheet sample S is released.

The first and second moving range setting means 8 and 9
Is a photo for detecting that the fastening members 3 and 5 are located at the origin position, that is, the position where the tensile force acting on the sheet-shaped sample is 0, as shown in FIG. The origin position detecting means 52 including a sensor and the like, the fastening member 3,
The extension position detecting means 53 including a photosensor or the like for detecting that the extension position 5 is moved to the extension position, that is, the pulling position located outside the origin position, and the installation position of the extension position detecting means 53 are adjusted. The extension position adjusting means 54 is provided.

The extension position adjusting means 54 supports the screw shaft 55 having a male screw portion screwed into a screw hole formed in the extension position detecting means 53 and the origin position detecting means 52, and detects the extension position. A support bar 56 slidably supporting the means 53, the screw shaft 55 rotatably supported, and a pair of bearing members 57 supporting the side ends of the support bar 56, and the screw shaft 55 are rotationally driven. And an operation handle 58. This operation handle 58
The screw shaft 55 is rotationally driven by the screw shaft 55, and the extension position detecting means 53 is screw-fed to adjust its installation position, whereby the sheet-like sample S is extended by the fastening members 2, 3 and 4, 5. Elongation rate of 20-300%
It is designed to be set within a certain range.

That is, the first and second reciprocating driving means 6,
When the fastening members 2 to 5 are driven by 7, the blocking member 59 protruding from the fastening members 3 and 5 reaches the installation position of the origin position detection means 52 at the fastening member 3. , 5 is detected at the origin position, and at the time when the shielding plate 61 reaches the installation position of the extension position detecting means 53, it is detected that the fastening members 3, 5 are moved to the extension position. This detection signal is output to the first and second motor control means 63 and 64 of the control unit 62 shown in FIG.

Then, the first and second motor control means 6
3 and 64 are at the time when it is detected that the fastening members 3 and 5 are at the origin position according to the detection signals of the origin position detection means 52a and 52b of the first and first movement range setting means 8 and 9. The control signals for driving the drive motors 39 and 51 in the normal direction are output to set the moving directions of the fastening members 3 and 5 to the extending direction of the sheet sample S, respectively.

When it is detected that the fastening members 3, 5 have reached the extended position in accordance with the detection signals of the extended position detecting means 53a, 53b of the first and first moving range setting means 8, 9, respectively. By outputting a control signal for reversely driving the drive motors 39 and 51, the moving directions of the fastening members 3 and 5 are changed to the contracting directions of the sheet-like sample S, respectively, whereby the fastening members 2 and 5 are moved. 3 and 4, 5 are reciprocally driven between the origin position and the extended position.

Further, the screw shaft 55 and the support bar 56.
The overrun detection means 59 and 60 for detecting the overrun of the fastening members 3 and 5 when the failure of the origin position detection means 52 or the extended position detection means 53 or the like is installed in the vehicle, and the overrun is detected. At that time, the operation of the drive motors 39 and 51 is stopped.

The moving speed setting means 10 and 11 are the first speed input means 65 and the second speed input means 6 for inputting the moving speed of the fastening members 2 to 5 for each of the reciprocating driving means 6 and 7.
6 and a control signal for controlling the drive voltage of the drive motor 39 constituting the first reciprocating drive means 6 according to the input signal of the first speed input means 65.
And a control signal for controlling the drive voltage of the drive motor 50 constituting the second reciprocating drive means 7 according to the input signal of the first speed control means 67 and the second speed input means 66. And a second voltage control means 68 for outputting to the control means 64.

Then, the first and second speed input means 6
By controlling the drive voltage of the drive motors 39, 51 according to the moving speeds of the respective fastening members 2-5 input by 3, 64, the rotational speed is controlled to control the fastening members 2, 3 and The moving speeds of 4,5 are individually set within a range of about 5 to 500 mm / sec.

Further, the control section 62 is provided with an automatic mode control means 69 for automatically setting the operating modes of the first and second reciprocating drive means 6, 7. The automatic mode control means 69 responds to detection signals output from the origin position detection means 52a of the first movement range setting means 8 and the origin position detection means 52b of the second movement range setting means 9 according to the detection signals. , 3 and 4,5, a counter for counting the number of movements, and a memory for storing the pre-programmed operation modes of the first and second reciprocating driving means 6, 7.
According to this operation mode, the first and second reciprocating drive means 6,
7 is configured to control the operating state.

For example, as will be described later, in the first stage of the expansion / contraction fatigue test, the driving directions of the first reciprocating drive means 6 and the second reciprocating drive means 7 are set to the opposite directions, and they are operated a predetermined number of times. After that, in the second stage of the expansion / contraction fatigue test, the driving directions of the first reciprocating drive means 6 and the second reciprocating drive means 7 are set to the same direction and the precession is performed a predetermined number of times. In the third stage of the expansion / contraction fatigue test, a control signal for operating one of the reciprocating driving means 6 and 7 while the other of the reciprocating driving means 6 and 7 is stopped a predetermined number of times is set. Control means 61, 6
By outputting the output to 2 or the like, the operation timing and rotation direction of the drive motors 39 and 51 constituting the first and second reciprocating drive means 6 and 7 are controlled.

An example of the method of stretching fatigue test of the sheet-like sample S using the stretching fatigue test apparatus having the above construction will be described below. In this expansion / contraction fatigue test, first, with the fastening members 2 to 5 set at the origin position, the peripheral portion of the sheet-like sample S is fastened to the fastening members 2 to 5, respectively.

Then, the installation position of the extension position detecting means 53 of the first and second movement range setting means 8 and 9 is changed by the extension position adjusting means 54 according to the application place and material of the sheet sample S. Thus, the movement ranges of the fastening members 2, 3 and 4, 5 are set respectively, and the first and second speed input means 63, 64 of the first and second movement speed setting means 10, 11 stop the movement. The moving speeds of the attachment members 2, 3 and 4, 5 are set respectively.

For example, when the above-mentioned sheet-like sample S is made of a cloth or the like using an elastic yarn used for sportswear or the like, the elongation rate of the sheet-like sample S is 20 to 300.
The movement ranges of the fastening members 2, 3 and 4, 5 are set by the movement range setting means 8 and 9 so that the movement range setting means 8 and 9 have relatively large values within the range of about%, and the expansion and contraction speed of the sheet sample S is also increased. Is set to a relatively large value within the range of 5 to 500 mm / sec by the first and second speed input means 65 and 66.
Set the moving speed of each.

Further, when the sheet-like sample S is made of a non-woven fabric or synthetic leather material used for ordinary clothing or the like, the sheet-like sample S has a relatively small value within the above range. The movement ranges of the fastening members 2, 3 and 4, 5 are set by the movement range setting means 8 and 9, respectively, and the expansion / contraction speed of the sheet sample S is set to a relatively small value within the above range. The fastening members 2, 3 and 4,5 are made by the first and second speed input means 65, 66.
Set the moving speed of each.

Then, a start switch (not shown) is operated to output a control signal from the automatic mode control means 69 to the first and second drive motor control means 63, 64 at a predetermined timing to drive the drive motors 39, 51. By rotating them in opposite directions, as shown in FIG.
To move the sheet-like sample S laterally, that is, in the left-right direction in the figure, and move the fastening members 4 and 5 inward to move the sheet-like sample S in the vertical direction, that is, in the vertical direction in the figure. 7 and the operation of contracting in the direction, the fixing members 2 and 3 are moved inward to contract the sheet sample S in the lateral direction, and the fixing members 4 and 5 are moved outward. By alternately performing the operation of extending the sheet-shaped sample S in the vertical direction, the sheet-shaped sample S is alternately expanded and contracted in the horizontal direction and the vertical direction.

Then, when it is confirmed that the first stage of the expansion / contraction fatigue test is completed by performing the above-mentioned operation a preset number of times, the first and second drive motor control means 6
By changing the output timing of the control signal output to the motors 3, 64 and rotating the drive motors 39, 51 in the same direction as each other, as shown in FIG. At the same time, an operation of moving the sheet-shaped sample S to the outside to extend the entire sheet-shaped sample S is performed, and as shown in FIG. By alternately performing the operation of contracting, the entire sheet-shaped sample S is simultaneously expanded, and then simultaneously contracted to repeatedly apply a load.

Further, when it is confirmed that the second stage of the expansion / contraction fatigue test is completed by performing the above-mentioned operation a preset number of times, the output of the control signal to the first drive motor control means 63 is stopped. Then, by stopping the operation of the drive motor 39 that constitutes the first reciprocating drive means 6,
As shown in 0, the drive motor that constitutes the second reciprocating drive means 7 by outputting a control signal to the second drive motor control means 64 at a predetermined timing with the left and right ends of the sheet-like sample S fixed. By rotating 51, the sheet-like sample S is repeatedly expanded and contracted in the vertical direction.

When it is confirmed that the above-mentioned operation of expanding and contracting the sheet-like sample S only in the longitudinal direction is performed a preset number of times and the third stage of the expansion / contraction fatigue test is completed,
After stopping the operation of the drive motor 51, the sheet-like sample S is removed from the fastening portions 2 to 5 and its fatigue characteristics are evaluated. For example, the suitability of the material is evaluated by confirming the ground yarn breakage of the sheet-like sample S made of a woven fabric and the breaking of the sheet-like sample S made of a nonwoven fabric or a synthetic leather material or the entanglement of fibers. can do.
Further, in the case of the sheet-shaped sample S formed by stitching a plurality of cloths, it is possible to evaluate whether or not the cloths and the sewing specifications are appropriate by confirming the broken state of the suture thread and the like. .

As described above, the sheet-like sample S made of cloth or the like is used.
Movement range setting means 8 for setting the movement range of the fastening members 2 to 5 whose peripheral portions are fastened to each of the reciprocating drive means 6 and 7,
9 and the moving speeds of the fastening members 2 to 5 are set to the respective reciprocating driving means 6,
Since the moving speed setting means 10 and 11 for setting every 7 are provided and the moving range and the moving speed of the fastening members 2 to 5 are arbitrarily set within a preset range, the sheet sample It is possible to perform an expansion / contraction fatigue test corresponding to the usage state of S and appropriately evaluate the fatigue characteristics.

That is, depending on the use of the clothing to which the above-mentioned sheet sample S is applied, the place of use, the material of the sheet sample S, etc., the elongation rate and the expansion / contraction rate of the clothing caused by the load acting on them are known in advance. Therefore, the elongation rate of the sheet-like sample S is set to 20 to 300 according to the value.
Select within the range of about% and set to an appropriate value,
By selecting the expansion / contraction speed of the sheet-shaped sample S within the range of 5 to 500 mm / sec and setting it to an appropriate value, an expansion / contraction fatigue test suitable for the application of the above clothing and the like can be performed.

For example, when the above-mentioned sheet-like sample S is used for sportswear, the sheet is assumed in consideration of the extension rate and the extension / contraction speed of the hips or elbows, etc., which occur during the attachment / detachment and bending / extension motions. The moving range and moving speed of the fastening members 2 and 3 installed in the lateral direction of the sample S and the moving range and moving speed of the fastening members 4 and 5 installed in the vertical direction are described as the moving range setting means 8 , 9 and moving speed setting means 1
The expansion and contraction fatigue test is performed by setting 0 and 11 respectively.

Then, by checking the ground yarn breakage of the sheet-like sample S made of the woven fabric and the breakage or entanglement of the fibers of the sheet-like sample S made of the non-woven fabric or the synthetic leather material, The suitability can be evaluated. Further, in the case of the sheet-shaped sample S formed by stitching a plurality of cloths, it is possible to evaluate whether or not the cloths and the sewing specifications are appropriate by confirming the broken state of the suture thread and the like. .

Further, as described above, the origin position detecting means 52 for detecting that the fastening members 3, 5 are at the preset origin position and the movement of the fastening members 3, 5 to the extended position are detected. Since the moving range setting means 8 and 9 having the extended position detecting means 53 and the extended position adjusting means 54 for adjusting the installation position of the extended position detecting means 53 are provided, the position of the extended position detecting means 53 can be visually detected. While confirming, by moving the installation position by the extension position adjusting means 54, the movement range of the fastening members 2, 3 and 4, 5 can be adjusted. Therefore, the extension rate of the sheet-shaped sample S can be easily and accurately set with a simple configuration.

Further, in the above embodiment, the first and second speed input means 65 and 66 for inputting the moving speeds of the fastening members 2, 3 and 4, 5 and the first and second moving speed input means 6 are provided.
Fastening members 2, 3 and 4, input by 5, 66
First and second voltage control means 67, 6 for controlling the rotation speed of the drive motors 39, 51 constituting the reciprocating drive means 6, 7 according to the moving speed of the drive motor 5.
Since the moving speed control means 10 and 11 having 8 and 8 are provided, the expansion and contraction speed of the sheet sample S can be easily and accurately set with a simple configuration.

Further, in the above embodiment, the fastening members 3, 5 are
Is the origin position detecting means 52 or the extension position detecting means 5
Since the overrun detecting means 59 and 60 for detecting the overrun beyond the installation position of No. 3 are installed and the operation of the drive motors 39 and 51 is stopped when the overrun is detected, the origin position detecting means is provided. It is possible to reliably prevent damage to the test apparatus when a failure occurs in the device 52, the extended position detecting means 53, or the like.

Further, a control signal for driving the fastening members 2, 3 and 4, 5 is sent to the first and second drive motor control of the reciprocating drive means 6, 7 based on the preset operation mode as described above. Automatic mode control means 6 for outputting to means 63, 64
9 is provided, the first and second reciprocating driving means 6 and 7 which are programmed in advance only by pressing the start switch.
Automatically perform the above-mentioned expansion and contraction fatigue test according to the operation mode of
The test results can be evaluated.

The operation mode of each of the fastening members 2 to 5 controlled by the automatic mode control means 69 is not limited to the above-mentioned embodiment, but various modifications can be made, as shown in FIGS. 6 and 7. As described above, a mode in which the sheet-shaped sample S is alternately expanded and contracted in the horizontal direction and the vertical direction, a mode in which the entire sheet-shaped sample S is expanded and contracted simultaneously as shown in FIGS. 8 and 9, and as shown in FIG. Alternatively, one or a plurality of modes may be selected from a mode in which the sheet-like sample S is expanded and contracted in the position direction and another mode, and the fastening members 2 to 5 may be reciprocally driven.

As shown in FIG. 11, the fastening members 2,
The operation mode input means 70 for inputting the operation modes of 3 and 4, 5 and the control signal corresponding to the operation mode of the fastening member inputted by the operation mode input means 70 for the first drive of the first reciprocating drive means 6. The motor control means 63 and the first drive motor control means 64 of the second reciprocating drive means 7 may be provided with a manual mode control means 71 for outputting respectively, or the operation mode input means 70 and the manual mode control means 71 may be provided. And the automatic mode control means 69 may be provided.

When the operation mode input means 70 and the manual mode control means 71 are provided, the sheet-like sample S is
Of the fastening members 2, 3 and 4, 5 so that the sheet-shaped sample S is subjected to an extension force in a direction and the number of times depending on the use of the clothing to which the item is applied, the use place, the material of the sheet-shaped sample S, and the like. The operator can arbitrarily set the operation mode. Further, only while the operation switch constituting the operation mode input means 70 is pressed, one or both of the first and second reciprocating drive means 6 and 7 are operated by the manual mode control means 7.
It may be configured to operate by 1.

Further, in the above embodiment, an example in which the first and second reciprocating driving means 6 and 7 for simultaneously driving the fastening members 2, 3 and 4, 5 arranged opposite to each other are arranged will be described. However, it is also possible to adopt a structure in which reciprocating driving means for individually driving the fastening members 2 to 5 are provided.

Further, as described above, the pair of fastening members 2, 3 and 4 are respectively provided along the screw shafts 21 and 22 and the two shafts passing through the shaft centers of the screw shafts 21 and 22 arranged in the orthogonal state. , 5 may be replaced with a structure in which a pair of fastening members are arranged along three or more axes centered on the central portion of the sample table 1.

[0057]

As described above, the invention according to claim 1 is such that the movement range of the fastening member to which the peripheral portion of the sheet sample made of cloth or the like is fastened is set for each reciprocating drive means. Since the range setting means and the moving speed setting means for setting the moving speed of the fastening member for each reciprocating driving means are provided and the moving range and the moving speed of the fastening member are arbitrarily set, the seat It is possible to perform an expansion / contraction fatigue test corresponding to the usage state of the sample. Therefore, by checking the ground yarn breakage of the sheet-like sample made of woven fabric, etc., and by checking the breakage or the entanglement of fibers of the sheet-like sample made of non-woven fabric or synthetic leather material, the suitability of the material is evaluated, Also, in the case of a sheet-like sample made by stitching multiple fabrics, it is necessary to perform an expansion / contraction fatigue test to evaluate whether the fabric and sewing specifications are appropriate by checking the broken state of the suture thread. It has the advantage that it can be executed.

The invention according to claim 2 further comprises an origin position detecting means for detecting that the fastening member is at the origin position, and an extended position detecting means for detecting that the fastening member has moved to the extended position. A movement range setting means having an extension position adjusting means for adjusting the installation position of the extension position detecting means is provided,
Since the extension position detecting unit is moved by the extension position adjusting unit to adjust the movement range of the fastening member and the fixing member, the extension rate of the sheet sample can be set easily and accurately with a simple configuration. There are advantages.

In the invention according to claim 3, the speed input means for inputting the moving speed of the fastening member, and the reciprocating driving means according to the moving speed of the fastening member input by the moving speed input means are constituted. Since the moving speed control means having the voltage control means for controlling the rotation speed by controlling the driving voltage of the driving motor is provided, the expansion and contraction speed of the sheet-shaped sample can be easily and accurately set with a simple configuration. .

Further, in the invention according to claim 4, when the automatic mode control means for outputting the control signal for driving the fastening member to the reciprocating drive means based on the preset operation mode is provided, the start switch is provided. There is an advantage that it is possible to automatically perform the expansion / contraction fatigue test according to the pre-programmed operation mode of the reciprocating drive means and to evaluate the test result simply by pressing.

According to a fifth aspect of the present invention, an operation mode input means for inputting an operation mode of the fastening member and a control signal corresponding to the operation mode of the fastening member input by the operation mode input means are transmitted. Since the manual mode control means for outputting to the reciprocating drive means is provided, the stretching force in the direction and the number of times depending on the application of the clothing to which the above-mentioned sheet-shaped sample is applied, the use place, the material of the sheet-shaped sample, etc. An operator can arbitrarily set the operation mode of the fastening member so as to act on the sample.

Further, in the invention according to claim 6, the sheet-shaped sample made of cloth or the like is radially arranged around a point on the sample table in a state where the peripheral part is fixed to the plurality of fixing members. Since the fastening members are reciprocally driven along a plurality of axes in accordance with the moving range and the moving speed corresponding to the usage state of the sheet-shaped sample, the sheet is configured to evaluate the fatigue characteristics of the sheet-shaped sample. There is an advantage that it is possible to perform an expansion / contraction fatigue test corresponding to the usage state of the test sample and to appropriately evaluate the fatigue characteristics.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an expansion and contraction fatigue test apparatus for a sheet-shaped sample according to the present invention.

FIG. 2 is a plan view showing a specific configuration of reciprocating driving means.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a plan view showing a specific configuration of a moving range setting means.

FIG. 5 is a block diagram showing a specific configuration of a control unit.

FIG. 6 is an explanatory diagram showing a stretched state of a sheet-shaped sample.

FIG. 7 is an explanatory diagram showing a stretched state of a sheet-shaped sample.

FIG. 8 is an explanatory diagram showing a stretched state of a sheet sample.

FIG. 9 is an explanatory diagram showing a contracted state of a sheet-shaped sample.

FIG. 10 is an explanatory diagram showing a stretched state of a sheet-shaped sample.

FIG. 11 is a block diagram showing another example of the control unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 sample stage 2-5 fastening member 6,7 reciprocating drive means 8,9 moving range setting means 10,11 moving speed setting means 52 origin position detecting means 53 extension position detecting means 54 extension position adjusting means 65,66 speed input means 67, 68 Voltage control means 69 Automatic mode control means 70 Operating mode input means 71 Manual mode control means S Sheet-like sample

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsushi Honda, 407 Honjinmei-cho, Gojo-jo, Tomikoji-dori, Sakyo-ku, Kyoto City, Kadiri Nishida Co., Ltd. Address Kato Tech Co., Ltd. (72) Inventor Toshio Hagiwara 5-12-17 Kiyomidai, Kawachinagano City, Osaka Prefecture

Claims (6)

[Claims] 1. A plurality of fastening members for fastening a peripheral portion of a sheet-like sample made of cloth or the like, and the above-mentioned stops along a plurality of axes radially arranged around a point on the sample table. Reciprocating drive means for reciprocating the attachment member, moving range setting means for setting the movement range of the fastening member for each reciprocating drive means, and moving speed for setting the moving speed of the fastening member for each reciprocating drive means An expansion / contraction fatigue testing device for a sheet-shaped sample, comprising: setting means. 2. An origin position detecting means for detecting that the fastening member is at the origin position, an extension position detecting means for detecting that the fastening member has moved to an extension position, and an installation position of this extension position detecting means. And an extension position adjusting means for adjusting
The expansion / contraction fatigue testing device for a sheet-like sample according to claim 1, further comprising a moving range setting means for restricting a moving range of the fastening member between the origin position and the extension position. 3. A speed input means for inputting a moving speed of the fastening member, and a drive voltage of a drive motor constituting the reciprocating driving means is controlled according to the moving speed of the fastening member inputted by the speed input means. The sheet-type sample expansion / contraction fatigue test apparatus according to claim 1 or 2, further comprising a moving speed control means having a voltage control means for controlling the rotation speed thereof. 4. An automatic mode control means for outputting a control signal for driving the fastening member to the reciprocating drive means on the basis of a preset operation mode is provided.
An expansion / contraction fatigue test apparatus for a sheet-shaped sample according to any one of 1. 5. An operation mode input means for inputting an operation mode of the fastening member, and a manual mode control for outputting a control signal corresponding to the operation mode of the fastening member inputted by the operation mode input means to the reciprocating drive means. An expansion / contraction fatigue test apparatus for a sheet-shaped sample according to any one of claims 1 to 3, further comprising: 6. A sheet-shaped sample made of cloth or the like in a state in which a peripheral portion of the sheet-shaped sample is fixed to a plurality of fixing members along a plurality of axes radially arranged around a point on the sample table. A moving range and a moving speed corresponding to the usage state of the sheet, and after reciprocally driving the fastening members according to the moving range and the moving speed, the fatigue characteristics of the sheet-like sample are evaluated. A method for stretching fatigue test of a sheet-shaped sample, characterized by.